How To Change Oil 2000-06 GMC Sierra 2500HD 6-0L

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Hi. I'm Mike Green. I'm one of the owners of 1A Auto. I want to help you save time and money repairing and maintaining your vehicle. I'm going to use my 20-plus years' experience restoring and repairing cars and trucks like this to show you the correct way to install parts from 1AAuto.com. The right parts installed correctly. That's going to save you time and money. Thank you and enjoy the video.

In this video, we're going to show you an oil change on this '02 GMC Sierra 2500HD. It has the six-liter motor, six-liter gas motor. Tools we need are 15mm wrench, maybe a hammer if you don't have a big wrench. Then also you'll need an oil filter wrench, and a rag, and obviously oil and oil filter.

I have the truck up on a lift and I have the tires off for a totally different purpose. The great thing about these trucks is you can do an oil change with them just sitting on the ground because they're so high up. You want to go underneath and here you can see your oil drain plug. I'm going to come around and obviously I have it up on the lift to make it a lot easier to film.

Underneath two things you basically need are your drain plug there, it's a 15mm bolt and your oil filter right there. I've got my 15mm wrench and at the dealer, they must have put this on pretty tight because I'm using a hammer to just get the wrench going a little bit. A longer socket and ratchet handle will be fine. One note, I always do an oil change when the engine is warm. In that case, you just need to be careful. That pipe that's to the right of my hand is the exhaust pipe. If you're changing the oil on a warm engine, you need to be very careful of that the exhaust pipe. The reason I do that is because when the oil is warmer, it flows better and you can get more of the old oil out. As you are unscrewing the plug here, it gets to a point you can see the oil starting to flow where you hold the oil in, obviously, I have a drain pan underneath here and there goes the oil.

Another good note is on these trucks, if you're right underneath it, have it on a little bit of an incline with the front of the truck facing up. That'll allow you to get a little more oil out. We'll let this drain for a little bit. I've let the oil drain for a while. Now I'm going to re insert the plug and notice I have the wrench in my hand. I'm going to tighten it back up, even though I may pull it out again a little bit to see if any of the oil comes out, but every time you put that plug in, make it a habit to tighten it up. That way, if you don't happen to do what you we're thinking what you were going to do, you have a tight plug in there. Basically, I always make it a habit of anytime I put a plug in, I always tighten it up.

Now, I've got my oil filter wrench, which I apologize, I didn't get a very good shot of this. You wrap the oil filter or wrench around the filter, get it turning little bit. Then you can just turn the oil filter off. As you can see as you're doing that, oil will start flowing out. You can let it flow for a little bit. I'll fast forward here and once you have the filter pretty much all the way off, then it just drops down and you put it on your catch pan and let the rest of that oil drain out for a little bit. Use a lint-free rag or paper towel and wipe off any excess oil that's on the oil filter base.

Now you want to take some oil, put it on your finger and coat the oil filter gasket with a layer of new oil. Once the filter is coated, you put it up in, get it on to the base and just lightly turn it. Once it catches, it should go on nice and easy and spin right on. You can see there, it spins right on and then go until it is tight with your hand and then you want to grab your oil filter wrench and tighten another half to three-quarters of a turn. Get our 15mm wrench again and make sure that that plug is tight.

Now here, I'm just going to take the dipstick out, wipe it off , just get any of that dirty oil that's on it off. Then we'll take the oil fill cap off and on this truck, it says right on it, 5W30. You can also check the manual, your owner's manual should tell you the engine oil type. Now right where that cap was, you're going to add in five quarts of oil and check the level. Check the oil by making sure the dipstick's clean, insert it all the way into the tube and then take it out. You can't really tell the level probably from this shot, but you can see that it's up to basically the fill line.

Now, we'll start up the truck, make sure we have good oil pressure and fill up the oil filter. Now here's your oil gauge, I'm going start up the truck and after a few seconds, the oil pressure will come up and let it run for a few seconds. Check the oil one more time and you should find now it's a quart low because the oil flowed into the filter and add another quart. On this truck, adding the other quart brought it to just below top full, I guess, or just below the maximum. We left it at just a little bit low because we didn't feel like opening another quart and putting it in, but if you wanted to, you could top it off. That's basically it. Then just. I just suggest drive your truck for 100 miles or so and check the oil again.

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